This porn video tag refers to content featuring a transgender individual with male gender identity. Transgender individuals are people whose gender identity differs from the sex they were assigned at birth. In this context, "transgender-male" denotes an individual who was born female but identifies as male and is possibly undergoing or has undergone hormone therapy and/or surgery to align their body with their gender identity. The tag indicates that the porn content may involve a transgender person with male gender identity participating in sexual activities, which is intended for adult audiences.